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Sav [38]
3 years ago
15

HELP FOR NUMBER 16 THROUGH 19 QUICKLY PLEASE

Mathematics
2 answers:
Ymorist [56]3 years ago
8 0
16)  9y+2r     If she bought 1 dog toy and 2 treats: 9(1)+2(2)= 13
17)  5n-3n= 2n
        17-2+7= 22   Combine like terms
         2n+22           Write out expression
        2(8)+22= 38   Plug in 8.
        Answer: 2n+22; 38
18)  5h^3   h represents the # of weeks; Find # of tickets sold in 3 weeks:h=3
       5(3)^3    plug in 3
       5(27)      PEMDAS; Exponents first; 3*3*3= 27
       Answer: 135         
19)  It is true
       If d=2, 5(2)*5(2)*5(2)= (5*2)^3
       10*10*10=(10)^3
        1,000=1,000

Hunter-Best [27]3 years ago
8 0
16) 9t+2x
T standing for cost Per toy
X standing for cost per treat
Be sure to include this to get full credit.
17) 5(8)+17-3(8)-2+7
40+17-24-2+7
57-24+5
33+5=38
Please include all work to receive full credit
18) 5(3)^3
3,375
Mrs.Cuiman has sold 3,375 tickets in 3 weeks
Please include the sentence above to receive full credit.
19) yes,this statement is true because an exponent is when a number and/or variable is multiplied more than once by itself.In this case the exponent is 3 in which 5d is multiplied by itself 3 times.

Hope this helped
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∠abc measures 115° and ∠dbc measures 70°. What is the measurement of ∠abd?
olasank [31]

Answer:

45 °

Step-by-step explanation:

m< ABC = m< DBC + m< ABD

= 115 _ 70

= 45 °

3 0
3 years ago
Marcus wants to use a model to determine the difference
grigory [225]

Electron transfer theory describes the parameters which control the rate at which an electron is transferred from one atom or molecule to another.

<h3>What was the basic principle of Marcus theory?</h3>
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We want to see how we can model the difference: -8 - 3 + 3

The correct option is D:

"add 3 positive counters and 3 negative counters"

We know that Marcus starts with 8 negative counters, corresponding to the first term in our difference.

Now, let's study the math of our expression.

-8 - 3 + 3

Remember that we can perform the operation in any order we want, so we can write this as:

-8 + (-3 + 3)

Notice that the thing inside the parentheses is equal to zero, so we have:

- 8 + (-3 + 3) = -8

So to not change the value, we add 3 and we subtract 3.

Now if we have 8 negative counters, and we want to add 3 positive counters and not change the value, then we also need to add 3 negative counters to "cancel" the 3 positive counters we added.

Then the correct option is D.

To learn more about Marcus refer to,

brainly.com/question/23140234

#SPJ1

8 0
1 year ago
A line goes through the point (–4,–2) and has an x-intercept of –1.
Nady [450]

Answer:

(5,4)

Step-by-step explanation:

thanks to the second information we know that a certain second point of the line is (-1,0)

Now we can use a formula to find the equation of the line, that is

(y-y1)/(y2-y1) = (x-x1)/(x2-x1) where x and y 1 and 2 are the coordinates of the points.

(y+2)/2 = (x+4)/(-1+4)

y+2/2 = (x+4)/ 3

3y+6 = 2x+8

2x-3y+2 = 0

now we have to find the point that make true the equation (we have to sobstitute x and y with the coordinates of the given points)

1)  -12 +15 + 2 = 0 ; 3 = 0 (wrong)

2) 6-4+2 = 0 ; 4 = 0 (wrong)

3) 8-15+2 = 0 ; -5 = 0 (wrong)

4) 10-12+2 = 0 ; 0=0 (true)

so (5,4) is the correct answer

4 0
3 years ago
Read 2 more answers
What is the least common multiple of six and four
KIM [24]

Answer:

12 hello how are you doing

3 0
3 years ago
Read 2 more answers
What is the solution to -4x+12&lt;36?<br><br> A- x&lt;-6<br> B- x&gt;-6<br> C- x&gt;6<br> D-x&lt;6
Karolina [17]

Answer:

B- x > -6

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right  

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtraction Property of Equality<u> </u>

Step-by-step explanation:

<u>Step 1: Define</u>

-4x + 12 < 36

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. [Subtraction Property of Equality] Subtract 12 on both sides:                       -4x < 24
  2. [Division Property of Equality] Divide -4 on both sides:                                x > -6
3 0
3 years ago
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